renommage de l'objet DB en Connection, suppression de la variable privée db dans le model

src/QueryBuilder.php

@@ -4,7 +4,7 @@ namespace Kletellier\PdoWrapper;
 
 class QueryBuilder
 {
-    protected ?Db $db;
+    protected ?Connection $db;
     protected array $columns;
     protected array $wheres;
     protected array $orders;
@@ -197,7 +197,7 @@ class QueryBuilder
 
     private function getData(): mixed
     {
-        $this->db = Db::getInstance($this->connection);
+        $this->db = Connection::getInstance($this->connection);
         return $this->db->getSelectQuery($this->getQuery());
     }